Check out this cool lego mindstorms project by these Germans! Wundava! Sehr Gutte!
This Warehouse Project shows the power and flexability of the LEGO Mindstorm kit. It uses Microsoft BizTalk, Windows Workflow Foundation and C# to stitch everything together. Watch the demo of the system in action where a SMS message from a cell phone activates the system, the first robot grabs a box from the warehouse and delivers it to the second robot which drives the package to its destination.